Abstract
The spatially-resolved local impedance can be measured by 'Millicontact Impedance Spectroscopy (MIS)', which involves the use of an array of sub-millimeter-scale electrodes. In stabilized zirconia and gadolinia-doped ceria electrolytes with highly resistive grain-boundaries, MIS could measure the local impedance precisely and revealed the spatially-resolved changes in the grain-interior and grain-boundary resistivity. The validity of this technique was illustrated using the examples such as the design of a new scavenger material and an analysis of the diffusion of the siliceous phase along the grain boundary.
Original language | English |
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Pages (from-to) | 966-970 |
Number of pages | 5 |
Journal | Solid State Ionics |
Volume | 179 |
Issue number | 21-26 |
DOIs | |
Publication status | Published - 2008 Sept 15 |
Keywords
- Gadolinia-doped ceria
- Grain-boundary conduction
- Local impedance
- Millicontact Impedance Spectroscopy
- Stabilized zirconia
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics